Artist&#39;s stippling-pen.



F. G. ADAMS.

ARTIST'S STIPPLING PEN. APPLICATION FILED 3.4, 1914.

1,132,896. Patented Mar. 23, 1915.

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FRANK CECIL ADAMS, OF LONDON, ENGLAND.

ARTISTS S'IIPPLING-PEN.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed April 4, 1914. Serial No. 829,564.

To all whom it may concern Be it known that I, FRANK CECIL ADAMS,subject of the King of Great Britain and Ireland, residing at 20 NewOxford street, London, l/V., in the county of London, Eng land, artist,have invented new and useful Improvements in Artists Stippling-Pens, ofwhich the following is a specification.

My invention relates to improvements in stippling pens, more especiallythose in which a short nib holder is so connected through the medium ofa spring to the pen body, that it may be given an oscillating movementabout its point of attachment to the same, causing the nib to rapidlyvibrate thereby making a series of dots upon the work in question Whilethe pen is in motion.

In order that my invention may be more readily understood, reference ishad to the accompanying drawings in which Figure l is an externalelevation of my improved stippling pen. Fig. 2 is an elevation showingthe mechanism the case being partly in section. Fig. 3 is a plan of themechanism removed from the case and Fig. 4 is a detail sectional view ofthe switch.

Referring to the drawings, A is the outer case in which the whole of theworking parts are contained. A frame B carries at one end the plug orbush 6 which is slotted to allow the pen-holder C to reciprocatetherein. The pen-holder C is mounted on the end of the spring strip Dsecured to the frame B by the flexible bracket b the opposite endforming the armature d, adapted to be attracted by the core of theelectro-magnet E, also mounted on the frame B, when the electric circuitis closed and which is restored by spring action when the circuit isbroken. A suitable contact breaker F is provided, comprising anadjustable contact 7 mounted in the bracket and adapted to contact withspring contact al on the flexible strip D carrying the pen-holder C.

In the end of the outer casing A is a plug or bush a through which thewires G pass to terminals on the disk 9 of insulating material; fromwhich the connecting wires pass, one to the winding of the electromagnetE and the other to a switch. This switch comprises an arm H ofinsulating material pivoted at h to the brush 6 and provided at one endwith the contact screw h to which the electric wire is connected and atthe other end is a push or operating button k which when depressed,raises the contact screw if, so as to bring this into contact with thecase A. As one end of the winding of the electro-magnet E is connectedto bracket 7' and through the contact f and spring blade d with theframe B, which is in contact with the case A; the circuit will becompleted when the switch is operated to close the circuit and thearmature d will be oscillated, to rapidly move the pen-holder C, to forma series of dots, when the pen in the latter is traversed over the paperor the like upon which it is desired to produce a design or stipple.

It will be readily seen that the whole of the mechanism may be easilywithdrawn in its entirety from the casing A without disturbing any ofthe parts. This pen when not working for stippling purposes may bereadily used for drawing straight lines.

What I claim as my invention and desire to secure by Letters Patentis 1. In an artists stippling pen, an outer casing, a frame carrying atone end an electro-magnet, a spring arm formed at one end to constitutethe armature to the electromagnet and carrying a pen or like holder atthe other, a bush mounted on the frame at the end remote from theelectro-magnet and in which the pen or like holder reciprocates and amake and break contact device to cause the armature to be oscillated bythe electro-magnet.

2. In an artists stippling pen, an outer casing, a frame carrying at oneend an electro-magnet, a spring arm formed at one end to constitute thearmature to the electro-magnet and carrying a pen or like holder at theother, a bush mounted on the frame at the end remote from theelectro-magnet and in which the pen or like holder reciprocates, a makeand break contact device to cause the armature to be oscillated by theelectro-inagnet, and a switch having a contact to which the electricalwire is connected and which is adapted to be brought into contact withthe case, to close the circuit from one lead through the winding of theelectro-magnet, contact breaker and spring blade to the frame and casingand from thence through the switch contact, back to the other lead.

3. In an artists stippling pen, an outer casing, a frame carrying at oneend an electro-magnet, a spring arm formed at one end to constitute thearmature to the electromagnet and carrying a pen or like holder at theother, a bush mounted on the frame at the end remote from the eleetromagnet and in which the pen or like holder reciprocates, a make andbreak contact device to cause the armature to be oscillated by theelectromagnet, a switch comprising an arm of insulating material pivotedto the bush at one end of the frame, an operating button projectingthrough the casing at one end and a contact at the other end to whichthe electrical wire is connected and which is adapted to be brought intocontact with the case when the projecting button is operated; to closethe circuit from one lead through the winding of the electro-magnet,contact breaker and spring blade to the frame and casing 15 and fromthence through the switch contact, back to the other lead.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

FRANK CECIL ADAMS.

Witnesses:

FRANK \V. PATTIsoN, JOHN D. MCCREDDIE.

Copies of this patent may be obtained for five cents each. by addressingthe Commissioner of Patents.

Washington, D. G.

